Hello Did I buy the following parts for my 850 TDI on the 5th of October 2010 via the Internet (Ebay). Crossbars, coupling rods and trackbar heads. On the 1st of April 2011 I was called by my madam, who had “broken off” a wheel. Cause: The supplied screw was simply nibbled through in the short time ( 10th of 2010 – 4th of 2011) by bolts of the crossbar (triangle handlebar). See picture 3 After expansion I put in total strong corrosion on both screws (the other side was also already knabbert). Likewise, the bolt of the triangle handlebar was already strongly corroded. As a comparison I have photographed another bolt ( picture 1 ), which is already for years (!!!!) the weather law. Picture 2 shows the installed bolt after only half a year. I have already written to the suppliers… one would like to return the parts so that I can provide replacement for myself……a new screw?? and who replaces the torn out drive shaft, would only have been able to make the damage?